Hydro International Downstream Defender 4-FT User manual
Operation and Maintenance Manual
Downstream Defender® hydrodynamic separator with 5mm Screen
Vortex Separator for Stormwater Treatment
Stormwater Solutions
Turning Water Around ...®
Downstream Defender®Operation and Maintenance ManualDownstream Defender®Operation and Maintenance Manual
Hydro International (Stormwater), 94 Hutchins Drive, Portland ME 04102
Tel: (207) 756-6200 Fax: (207) 756-6212 Web: www.hydro-int.com
The Downstream Defender®is an advanced Hydrodynamic
Vortex Separator designed to provide high removal
The Downstream Defender®has unique,
testing, CFD modeling and over thirty years of hydrodynamic
and stormwater applications. These internal components
distinguish the Downstream Defender®
preventing washout of previously stored pollutants.
the Downstream Defender®allow for a small footprint making
it a compact and economical solution for the treatment of
®
•
• No pollutant washouts
• Small footprint
•
• Low headloss
•
• Easy to install
• Low maintenance
Applications
•
• Utility yards
• Streets and roadways
• Parking lots
•
• Industrial and commercial facilities
• Wetlands protection
Downstream Defender®
3 Downstream Defender®by Hydro International
-BenetsoftheDownstreamDefender®
- Applications
- Downstream Defender®Components
4 Operation
- Introduction
- Pollutant Capture and Retention
- Wet Sump
- Blockage Protection
4 Maintenance
- Overview
-DeterminingYouMaintenanceSchedule
5 Maintenance Procedures
- Inspection
- Floatables and Sediment Cleanout
8 Downstream Defender®Installation Log
9 Downstream Defender®Inspection and Maintenance Log
COPYRIGHT STATEMENT:
the use of the recipient to whom the document and all associated information are directed. Hydro International plc owns the copyright of this document
Hydro International plc. Downstream Defender®is a trademarked hydrodynamic vortex separation device of Hydro International plc. A patent covering the
Downstream Defender®
DISCLAIMER: Information and data contained in this manual is exclusively for the purpose of assisting in the operation and maintenance of Hydro
International plc’s Downstream Defender®
Downstream Defender®Components
1. Tangential inlet
2. Benching skirt
3. Bypass Screen
4. Inline Screen
5. Outlet Pipe
7. Isolated Sediment Storage Zone
1
2
7
2
3
5
4
Page | 2 Page | 3
6
Downstream Defender®Operation and Maintenance ManualDownstream Defender®Operation and Maintenance Manual
Hydro International (Stormwater), 94 Hutchins Drive, Portland ME 04102
Tel: (207) 756-6200 Fax: (207) 756-6212 Web: www.hydro-int.com
Trash, sediment and polluted water is stored inside treatment
in order to prepare the system for maintenance and install any
• Solids removal
• Removal of liquid pollutants
•
Sanitation services providers not intimately familiar with stormwater
ing pollutants from stormwater and how to keep systems running at an optimal level.
•
nents appropriately.
•
•
your Hydro warranty plan
•
Make sure you’re not paying for service that is covered under your warranty plan. Only Hydro International’s service teams can identify
Not all vactor trucks are created equal. Appropriate tools and suction power are needed to service stormwater systems appropriately.
•
• Stormwater separators
•
•
• Storage structures
•
• Stormwater ponds
•
1 (888) 382-7808
Downstream Defender®Operation and Maintenance ManualDownstream Defender®Operation and Maintenance Manual
Hydro International (Stormwater), 94 Hutchins Drive, Portland ME 04102
Tel: (207) 756-6200 Fax: (207) 756-6212 Web: www.hydro-int.com
Operation
Introduction
The Downstream Defender®
components. No manual procedures are required to operate
the unit and maintenance is limited to monitoring accumulations
Defender®
the unit or removal of the internal components is not necessary
entry are avoided.
Pollutant Capture and Retention
The internal components of the Downstream Defender®have
volumes so that separator performance is not reduced as pollutants
Defender®is designed and installed into the storm drain system
separate from the sediment storage volume in the sump of the
unit providing the option for separate oil disposal, and accessories
storage volumes are isolated from the active separation region,
Wet Sump
The sump of the Downstream Defender®retains a standing water
Maintenance
Overview
The Downstream Defender®
Periodic removal of these captured pollutants is essential to the
®.
The Downstream Defender®will capture and retain sediment and
oil until the sediment and oil storage volumes are full to capacity.
When sediment and oil storage capacities are reached, the
Downstream Defender®
sediment and oil. Maximum pollutant storage capacities are
The Downstream Defender®allows for easy and safe inspection,
plate. The sediment removal access ports for all Downstream
Defender®
Removal, and Sediment Removal. Maintenance events do not
require entry into the Downstream Defender®, nor do they require
the internal components of the Downstream Defender®
vactor truck is not required. However, a vactor truck is required if
the maintenance event is to include oil removal and/or sediment
removal.
Determining Your Maintenance Schedule
inspected every six months to determine the rate of sediment and
®
®typically takes less than
Inspection Procedures
Inspection is a simple process that does not involve entry into the
Downstream Defender®
with the Downstream Defender®and its components prior to
inspection.
Scheduling
• It is important to inspect your Downstream Defender®every
•
of the year
• Sediment removal is not required unless sediment depths
Recommended Equipment
•Safety Equipment and Personal Protective Equipment
•
•Pole with skimmer or net
• ®)
•
NOTES
1. Refer to Dowmstream Defender®
2. Oil accumulation is typically less than sediment, however, removal of oil and sediment during the same service is recommended.
3.
4.
Downstream Defender®Pollutant Storage Capacities and Max. Cleanout Depths.
Fig.1 Pollutant storage volumes of the Downswtream Defender®.
Oil Max Oil
Storage Depth
Isolated Sediment
Storage
Sediment
Unit Diameter Total Oil Storage Total Sediment
Storage
Sediment
Max. Liquid Volume
Removed
(feet) (gallons) (inches) (gallons) (inches) (gallons)
4 <16 141
6 216 <23 424 <24 1,239
<33 939
<42 1,757 <36 5,546
12 <49 <42
Page | 4 Page | 5
Downstream Defender®Operation and Maintenance ManualDownstream Defender®Operation and Maintenance Manual
Hydro International (Stormwater), 94 Hutchins Drive, Portland ME 04102
Tel: (207) 756-6200 Fax: (207) 756-6212 Web: www.hydro-int.com
Inspection Procedures
1. Set up any necessary safety equipment around the access
port or grate of the Downstream Defender®
local ordinances. Safety equipment should notify passing
2.
Downstream Defender®will only have one lid.
3.
inspect the inside. Make note of any irregularities. See
4. Without entering the vessel, use the pole with the skimmer net
5. ®, measure
the depth of sediment that has collected in the sump of the
vessel (Fig.5).
6. On the Maintenance Log (see page 9), record the date, unit
removed, and the depth of sediment measured. Also note
any apparent irregularities such as damaged components or
7. Securely replace the grate or lid.
8. Take down safety equipment.
9. Notify Hydro International of any irregularities
noted during inspection.
and pole. The access port located at the top of the manhole
Scheduling
•
a year during any season.
•
•
Recommended Equipment
•
•
•
• ®)
•
• Downstream Defender®Maintenance Log
1. Set up any necessary safety equipment around the access
port or grate of the Downstream Defender®
local ordinances. Safety equipment should notify passing
2.
®will have 2 lids).
3.
inspect the inside. Make note of any irregularities.
4.
stored on the surface of the water with the vactor hose or the
skimmer net (Fig.9).
5. ®, measure the
depth of sediment that has collected in the sump of the vessel
and record it in the Maintenance Log (Pg.9).
6.
7. Retract the vactor hose from the vessel.
8.
measured. Also note any apparent irregularities such as
9. Securely replace the grate or lid.
Fig.9 Floatables and sediment are removed with a vactor hose
Fig.7 View over center shaft into sediment storage zone. Fig.8 View of outer annulus of oatables and oil collection zone.
Fig.4 Fig.5 Fig.6
Activity Frequency
Inspection
Removal
Sediment Removal
Maintenance at a Glance
Page | 6 Page | 7
Date Initials
Depth of
and Oils
Sediment *
Depth
Measured
Volume of
Sediment
Removed Site Activity and Comments
Downstream Defender®Installation Log
INSTALLATION DATE: / /
MODEL (CIRCLE ONE): 4-FT 6-FT 8-FT 10-FT CUSTOM
Downstream Defender®Inspection and Maintenance Log
Hydro International
Hydro International
Downstream Defender®Operation and Maintenance Manual
Hydro International (Stormwater), 94 Hutchins Drive, Portland ME 04102
Tel: (207) 756-6200 Fax: (207) 756-6212 Web: www.hydro-int.com
NOTES Notes
Turning Water Around...®
Stormwater Solutions
94 Hutchins Drive
CALL 1 (888) 382-7808 TO SCHEDULE AN INSPECTION
This manual suits for next models
3
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